Power supply



FIG. 1 is a top, front, left side perspective view of a power supply and showing an electrical outlet cover in a down/closed position, showing my new design in a first configuration;

FIG. 2 is a bottom, back, right side perspective view of the power supply, shown in a second configuration;

FIG. 3 is a top view of the power supply and showing the electrical outlet cover in an up/opened position;

FIG. 4 is a bottom view of the power supply, shown in a first configuration;

FIG. 5 is a left side view of the power supply and showing the electrical outlet cover in an up/opened position, shown in a third configuration;

FIG. 6 is a right side view of the power supply and showing the electrical outlet cover in a down/closed position, shown in a first configuration;

FIG. 7 is a front view of the power supply and showing the electrical outlet cover in a down/closed position; and,

FIG. 8 is a back view of the power supply and showing the electrical outlet cover in an up/opened position, shown in a third configuration. 

CLAIM The ornamental design for a power supply, as shown and described. 